Thinking about installing a mini split yourself? With pre-charged R-454B...

https://cleaneverycorner.com/is-a-21000-btu-12k9k-dual-zone-mini-split-enough-for-two-rooms/

Thinking about installing a mini split yourself? With pre-charged R-454B quick-connect linesets, you skip the vacuum pump and EPA license hassle. Plug in the 9K or 12K units using standard 115V outlets